Sepion Technologies
Polymer materials for energy storage and battery applications with nanoscale structural control
- Sector
- Energy
- Headquarters
- EMERYVILLE, CA
- Latest Form D
- $18.7M, Nov 2021
- Total capital
- $19.9M
- Federal grants
- $1.1M
- 2 awards · 2016–2017
- Rank in peer group#41 of 53
- Private capital raised
- $18.7M
- 1 Form D · last Nov 2021
- 59 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 2
- 27 pending · first 2022
- Rank in peer group#12 of 53
Capital timeline
Latest events
- Private capital raisedForm D · SEC · 1st filing$18.7M
- Federal grantEnergy · Phase II · Transition Metal Blocking Microporous Polymer Separators for Energy-Dense and Long-Lived Li-ion Batteries$1M
- Federal grantEnergy · Phase I · Membranes and Materials for Energy Efficiency - Subtopic d) Other. Title: Polysulfide-Blocking Polymer Membrane Separators for Rechargeable Lithium-Sulfur Batteries$150K
Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.
Federal first
69months
from Sepion Technologies’s first federal award to its first private round.
- First federal award · Mar 2016
- Energy · $150K
- First Form D · Nov 2021
- $18.7M · 1st Form D
- Awards before first raise
- 2 awards
An association in public records, not a cause or a prediction.
Standing among 53 peers
Line = medianEnergy · Material
- Federal grantsBelow median
- Granted patents#12 · top 23%
Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.
Founders and team
Researcher links verified by same-company patents and grants- Brett A. HelmsResearcherExecutive Officer, DirectorLinked by $150K in grants as PI
- Peter FrischmannResearcherExecutive Officer, DirectorLinked by $1M in grants as PI
- Randy A. ChanDirectorNamed in SEC Form D filings
What it has protected
USPTO · 2 granted of 29- PendingTernary Solvent Electrolytes For High Voltage And High Rate Lithium BatteriesUSPTOApplication 19115034
- GrantedElectrochemical Cells With Ionic Sequestration Provided By Porous SeparatorsUSPTOUS 12,327,835
- PendingSpirobisindane Polymers Of Intrinsic Microporosity And Methods Of MakingUSPTOApplication 18392739
Show all 29 patent records
- Ternary Solvent Electrolytes For High Voltage And High Rate Lithium BatteriesApr 2, 2026 · Application 19115034Pending
- Electrochemical Cells With Ionic Sequestration Provided By Porous SeparatorsJun 10, 2025 · US 12,327,835Granted
- Spirobisindane Polymers Of Intrinsic Microporosity And Methods Of MakingAug 8, 2024 · Application 18392739Pending
- Polyelectrolyte CompositesJul 6, 2023 · Application 17999706Pending
- Electrochemical Cells With Ionic Sequestration Provided By Porous SeparatorsJul 19, 2022 · US 11,394,082Granted
- Coated Separator For A Lithium BatteryApplication 63697978Pending
- Spirobisindane Copolymers And Methods Of MakingApplication PCTUS2024035803Pending
- Crosslinked Spirobisindane PolymersApplication 63565288Pending
- Spirobisindane Polymers Of Intrinsic Microporosity And Methods Of MakingApplication PCTUS2023085432Pending
- Ternary Solvent Electrolytes For High Voltage And High Rate Lithium BatteriesApplication PCTUS2023075120Pending
- Multilayer Battery Separator Comprising A Microporous Polymer LayerApplication PCTUS2023070227Pending
- Battery Separator Having A Polymer LayerApplication PCTUS2023070200Pending
- Spirobisindane Copolymers And Methods Of MakingApplication 63510978Pending
- Spirobisindane Polymers Of Intrinsic Microporosity And Methods Of MakingApplication 63476777Pending
- Multilayer Battery Separator Comprising A Microporous Polymer LayerApplication 63476768Pending
- Ternary Solvent Electrolytes For High Voltage And High Rate Lithium BatteriesApplication 63377310Pending
- Multilayer Battery Separator Comprising A Microporous Polymer LayerApplication 63368629Pending
- Polyelectrolyte CompositesApplication PCTUS2021034203Pending
- Polyelectrolyte CompositesApplication 63030439Pending
- Electrostatic MembranesApplication 62951769Pending
- Crosslinked Spirobisindane PolymersApplication 19623466Pending
- Spirobisindane Copolymers And Methods Of MakingApplication 19496280Pending
- Electrochemical Cells With Ionic Sequestration Provided By Porous SeparatorsApplication PCTUS2017054069Pending
- Method Of Producing A Coated Separator For A Lithium BatteryApplication PCTUS2025058429Pending
- Electrochemical Cells With Ionic Sequestration Provided By Porous SeparatorsApplication 62401046Pending
- Coated Separator For A Lithium BatteryApplication PCTUS2025047603Pending
- Coated Separator For A Lithium BatteryApplication 63792836Pending
- Crosslinked Spirobisindane PolymersApplication PCTUS2025020079Pending
- Coated Separator For A Lithium BatteryApplication 63729133Pending
Related companies, and why
- JORDAN ENERGY ALTERNATIVE LLCSimilar federal contract value in Energy · null in contracts
- Zephyr FusionSimilar federal contract value in Energy · null in contracts
- MAREL POWER SOLUTIONS, INC.Similar federal contract value in Energy · null in contracts
- Energy Materials CorporationSimilar federal contract value in Energy · null in contracts
- One King Entertainment, IncSimilar federal contract value in Energy · null in contracts
- HondaSimilar federal contract value in Energy · null in contracts
Regulatory activity · Energy
- Air Plan Approval; Michigan; Redesignation and Maintenance Plan for the Partial St. Clair 2010 1-Hour Sulfur Dioxide (SO2) NAAQS Nonattainment AreaEnvironmental Protection Agency
- Air Plan Approval; Delaware; 2006 24-Hour Fine Particulate Matter Limited Maintenance Plan for the Philadelphia Nonattainment AreaEnvironmental Protection Agency
- Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP ProvisionsEnvironmental Protection Agency
- List of Approved Spent Fuel Storage Casks: NAC International, Inc., MAGNASTOR® Storage System, Certificate of Compliance No. 1031, Amendment Nos. 16 and 17 and Revisions to Amendment Nos. 0 Through 16Nuclear Regulatory Commission
- Epyrifenacil; Pesticide TolerancesEnvironmental Protection Agency
- Fluoxapiprolin; Pesticide TolerancesEnvironmental Protection Agency
Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.
Sources
Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.
How to read this page
Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.
Data freshness
SEC Form D filings through . SBIR and STTR awards through .